How to close the door to the serger for it to operate?

Serger thread breaks
1. Is the serger threaded correctly?
2. Is the needles inserted correctly?
3. Is one of the needles bent or damaged?
4. Is the tension adjusted too tightly?
5. Is the tension adjusted to accommodate thickness of thread being used?
6. Are you using inferior quality thread?
7. Is the thread feeding of the cone/spool freely?
8. Is the needle size correct for the type of fabric being used?
9. Are the needles being used the correct one for the serger?

Hi

If you have the operators manual for this serger, you should be able to follow the threading from the start successfully. Some machines have a better threading diagram on the machine itself.

The needles should have the groove facing the operator's position. They should also be fully inserted in their mounts. Most sergers do not release the thread tensions when the presser foot is raised, therefore, you must zero the tensions to make sure the threads are fully entered into the tensioners when threading anew. After threading, you must readjust your thread tensions to the desired tensions for the set-up you plan to use. Thread tensions should be recorded for each stitch set-up because each serger tends to be a bit different, and therefore, allows you to quickly adjust for the desired stitch needed. The different stitches are adjust and fine tuned by each individual thread tension.

Hope this helps
Ray

here's a tip I learned for sewing machine or serger

do one thread cone at a time-the cone or spool that's on the serger--cut the thread close to the cone-then remove the cone from the serger ,,don't remove the thread that you just cut from the serger,,now put your thread on the spindle & tie your thread to the thread that you just cut (make sure it's a small knot) now the thread that's in the needle pull until the thread that in the needle is your & then cut off the other thread & make sure to cut of the knot part & leave a thread tail of 4 to 6 inches

do each spindle this way

Been there, done that. Old serger almost went out the window more than once.

Raise the thread antenna and loopers to their highest positions.

Set the tensions to zero. If your serger has auto-tension, raise the presser foot as this also opens the tensions.

Begin threading from the right as indicated in your manual or on the door of the serger.

If this continues, the serger may need to be serviced as the timing could be the problem.

Ask before leaving the serger as the service cost usually starts around $100.

I finally gave in and bought a Babylock with instant jet-air threading.

Some sergers require they be threaded in a particular order. If not, they do not "knit" the threads.

Raise the thread antenna to it's highest position.

Open the tensions (set at zero). If the tension settings are automatic, raise the presser foot to open the tension settings.

Turn the handwheel so the loopers are at their highest position. There may be a mark on the side of the serger to match up with a mark on the hand wheel for this.

Open the front of the serger and the threading guide should be printed on the inside of the serger door, or on the serger.

Start at the right and note which looper is threaded first and then the needles.

You can find more information and manuals at the Singer Co website.

Once the thread breaks, the serger usually has to be re-threaded - all four components of the serger.

Raise the antenna to it's highest position.

Open the tensions to zero.

Turn the handwheel so the the loopers are at their highest position. Some sergers have a mark on the handwheel that aligns with a mark on the side of the serger for this step.

Thread according the the sequence indicated on the threading guide - this is either on the inside of the door or on the serger.

Sometimes we think we have the machine threaded correctly, but the stitches just won't knit - I threatened my old serger many times only to find the lower looper thread had popped out.

Open the doors and watch what is happening when you turn the hand wheel.

Make sure the thread antenna is fully extended and thead the machine with the tension open (zero) and in the order shown in the manual.

Once you get this great, but sometimes naughty little machine stitching as it should, do not let it run out of thread.

Cut the thread near the cones and tie off to the new thread.

Open the tensions and slowly run the machine until the new thread appears - you will have to stop as the knot gets to the needles and thread manually.

Sergers can be a bear! One miscue and - well you know. My old serger was threatened more than once.

Are the instructions for this model printed on the inside of the door or on the machine?

Note every guide and make sure none are missed.

Raise the thread antenna to it's highest position.

Raise the presser foot and turn the tensions to zero.

Start threading with the upper looper, making sure the loopers are not crossed.

The upper looper is the one that appears to be taking the thread toward the needles.

Make sure the threads do not cross as you then thread the lower looper (this one appears to be taking the thread away from the needles).

Lastly - thread the needles; right needle first.

Take the ends of the thread under the presser foot and toward the left side of the presser foot.

Lower the presser foot and set the tensions back to 3 - 6.

Stitch a chain of thread before stitching fabric.

If this works, and I sincerely hope it does, never let the serger run out of thread.

Snip the thread near the cone and tie off snugly with the new thread.

Lift the presser foot and open the tensions and stitch or gently pull the thread toward the back of the serger. The knots should clear all but the eye of the needles - stop, cut before the knot reaches the eyes

The order of threading is most important. If you letter the tension knobs from left to right A,B,C,and D. The order for threading it is C,D, B, A. There are two arms under the needle that cross each other called loopers. The order is upper looper, lower looper, right needle, left needle .I'm sure there is a diagram under the cover when you open it. Most do. It would be very helpfull to use a long threading tweezers to guide the thread through the holes. The lower looper has a hole in the back to put the thread through then through the front hole ( though some newer sergers have a lever that you put the thread on and it does it for you and over the thread of the upper looper and out the back.
It would help alot more if I knew the brand and model of your serger so these are basic instructions. Hope I helped.
Rick

With the door open, the needle plate removed and no threads in the machine, slowly turn by hand one or two revolutions & take a close look at the motion of the loopers and the needle/s, are they colliding, or is the needle becoming jammed by the black guard surrounding the lower looper ?

Ensure there are no threads or fabric debris jammed anywhere.

If it is "new" and under warantee, it would be worth a call to the dealer asking for their advice and see if they will take a look at it for you........arrange to meet with the technician if possible.